The sixth season of It's Always Sunny in Philadelphia, premiered on FX on September 16, 2010. The season contains 14 episodes and concluded airing on December 9, 2010 with the hour-long Christmas special. An additional episode called "The Gang Gets Successful" was produced for this season, but was not aired, despite scenes from the episode being included in promotional material for season 6. It was later re-edited with new scenes to create the Season 7 episode "How Mac Got Fat".

Watch It's Always Sunny in Philadelphia season 6 episode 13 (S06E13)

After years of being mistreated by Frank during the holiday season, Dennis and Dee decide to teach him a lesson. Meanwhile, Mac and Charlie reflect on their childhood Christmases, and realize that they were not as joyous and wonderful as they remembered.

Watch It's Always Sunny in Philadelphia season 6 episode 10 (S06E10)

Watch It's Always Sunny in Philadelphia season 6 episode 9 (S06E09)

Motivated by the drama teacher who inspired her, Dee takes a job as a substitute teacher, and exposes her students to the culture of Paddy's with a field trip to see the Gang's take on the Lethal Weapon series: Lethal Weapon 5.

Watch It's Always Sunny in Philadelphia season 6 episode 6 (S06E06)

Mac's mother is left homeless after she burns down her house, which leaves Charlie and Mac with no choice but to make new living arrangements; when Dee feels under the weather, Frank tries to muster his paternal instincts to care for her.

Watch It's Always Sunny in Philadelphia season 6 episode 2 (S06E02)

Watch It's Always Sunny in Philadelphia season 6 episode 1 (S06E01)

Mac defends traditional marriage, while the rest of the gang reaps the rewards of wedded bliss.

How to watch It's Always Sunny in Philadelphia season 6 (S06) online without downloading

Watch It's Always Sunny in Philadelphia season 6 online only at TVZion for free. No download or registration required.

It's Always Sunny in Philadelphia season 6 started airing on Sep 16, 2010
and we have updated 12 out of 13 aired episodes and we will add more as they air.

Please note that new It's Always Sunny in Philadelphia season 6 episodes can take upto 2 days to be updated after their first airing date.

To watch It's Always Sunny in Philadelphia season 6 episodes, select the season and episodes from the list above and the proper episode information
will appear on the right side (or below in case of mobile devices), click on the watch now button below the episode info to go to episode page, and watch
the respective episode without downloading.